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The six-membered cyclic structure is called

Option: 1

Furanose
 


Option: 2

Pyranose


Option: 3

Hemiacetal


Option: 4

Hemiketal


Answers (1)

best_answer

 

 

Ring Structure of Monosaccharides

  • Monosaccharides can exist as a linear chain or as ring-shaped molecules.
  • The ring shaped is formed in the aqueous solution. 
  • When the monosaccharides cyclize to form rings, they typically form two types of rings as furanose or pyranose.
  • Furanose is a five-membered ring structure.
  • Pyranose is a six-membered ring structure.
  • In case of aldose sugars, the ring structure is formed when the alcohol group reacts with the aldehyde to produce a hemiacetal.
  • In case of ketose sugars, the ring structure is formed when the alcohol group reacts with the ketone to produce hemiketal.
  • Both reactions result in the ring-structure with a new asymmetric carbon called the anomeric carbon.

 

       

 

 

 

Pyranose is a six-membered ring structure.

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sudhir.kumar

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